【MAGNETS COATED】Strong neodymium cup magnets with holes are coated with three layers of black epoxy+ nickel+ copper, so they provides a shiny and rust resistant protection for strong magnets heavy duty. | 【STRONG POWERFUL】 These 1.26 inches strong round base magnets made of neodymium rare earth magnetic materia,unbelievable holding power for the size, per strong rare earth magnet can up to 110 pound holding power, fit most of the uses in your life. | 【VERY DURABLE】This heavy duty cup magnets is made of precision mechanical vehicles and these magnets will not break in normal use since the magnets are protected inside the steel cups which greatly increase the longevity of the magnets. Smooth surface and one-off appearance reduce your unnecessary troubles. | 【EXTENSIVE USE】：These neodymium cup magnets with heavy duty countersunk hole and six free screws and six double sided adhensive tapes can be used in a variety of life scenarios,Perfect for Handy Assembly for Home, Business and Schools! Holding, Lifting,Wall mounting, Fishing, Closing, Retrieving,cabinet, blackboard and refrigerator and much more, Use it with our accessories which brings different gravitational experience to your life. | 【PROFESSIONAL SERVICE】We are a magnet supplier with professional strength. You can certainly find strong cup magnets with holes you want in my shop! If you need mass customization of rare earth magnets heavy duty, contact us and we can meet your needs.